Lancer Lancer shotgun extension tube mossberg 590/930 plus4
FEATURES Other Features: Extra long spring included that needs cut to length, plus 4 rounds, length 10.3"
-Adds 4 rounds to capacity
-Designed to attach to existing shotgun magazine tubes to provide added capacity to the shotgun
-Machined aluminum components combined with a lightweight carbon-fiber tube
-Creates a lightweight, durable extension to your shotgun
-An extra-long spring is included that can be cut to optimize loading
-Extension clamps are recommended for extension tubes that extend beyond the end of the barrel